1) does it weigh down the car much?
yes i would say it does, i went for half in ch mdf as opposed to the 3 quater inch stuff to save a bit of weight, used fiberglass inside and out to strenghten the box tho so it doesnt fles as the 15s do kick hard. i had to take the install out to move some stuff and i drove the car without the amps, subs and boxes in and it did accelerate faster, i would say the kit weighs about the same as a small passenger at a guess. its only a 1.4 so im not to bothered about it moving quickly as its never gonna happen lol
2) what size boxs have you used?
the kickers need anything between 1.8 and 2.7 cubic feet of box space. mine come in at about 2.1 i messed about for ages with enclosure design programs to find the largest enclosure space but from a box that isnt boring and plain. this set up was the comprise i found.
3) also will you be at the south end meet on the 14th of sept?
never met anyone from cliosport yet so would be nice to come down and say hello to a few people. hope to make it down yes, im usually in southend most sat nights anyway.